You will notice the explnation in Paragraph 2 and that the shorthand outlines have marks under them. This is placed in the manual for your reference. When you take dictation, you may or may not need to use them. These are helpful when you take dictation on new material (not until after Lesson 70) and do not know the word very well.
For me, I have never used them as I didn't understand them when I first learned shorthand and never have used them.
Most likely the meaning of the sentence will tell you what the word is. And so wil the surrounding subject matter.
You are more then welcome to memorize these marks for your shorthand writing, but again, it is not necessary.
Read each drill for a few minutes. Do not spend more then 6 minutes on each drill, as little as 3 minutes is suggested.
If you finish within your allotted study time, read the more difficult drills once more.
Most shorthand is written by the sound of the word, rather then the spelling. For example, rattle is written r-a-t-l because that is all you hear. Sometimes in Gregg Shorthand words are abbreviated to facilitate writing.
"Gregg Shorthand had achieved the most extraordinary success ever attained by any system in the history of shorthand." John Robert Gregg, 1922